In Berlin we also have a “fleet” of cargo bikes that are even free to rent (operated by different social organizations around the city). I’ve used them several times with different models, e.g. for moving stuff or going on a trip with the big dog. :)
Yeah, the program in Berlin is being established by organizations like ADFC (German bicycle club) that are a bit smarter and optimistic about it. I’m pretty sure the city administration wouldn’t be capable of pulling off such a good system…